Idol group ABLE has become a 4-member group after an addition of a member.

Last year, the group ABLE had caught much attention with their debut as a two-member group with Joo Ho and Chul Woong. But this year, they decided to add two members Sung Min and Ji Yeol and make a new start with their new album.

Unlike the ballad songs that they debuited with, their new songs will be more focused on powerful dance and performance.

The new song that ABLE introduced was called "Mystery" produced by One Punch, and it is about a man who desperately wants returned love from his lover.

One Punch stated, "I tried very hard to make a melody that could be memorized very easily and that would fit ABLE's unique color."

Photo Credit: ABLE